| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Jaecheondong | city | Jeju | Korea, Republic of (South) | 33.39 | 126.25 | 141 | 9867 |
| Jagunae | city | Jeju | Korea, Republic of (South) | 33.31 | 126.17 | 26 | 5746 |
| Jaidong | city | Jeju | Korea, Republic of (South) | 33.42 | 126.32 | 830 | 15079 |
| Jajodong | city | Jeju | Korea, Republic of (South) | 33.39 | 126.23 | 98 | 8856 |
| Jangheungdong | city | Jeju | Korea, Republic of (South) | 33.44 | 126.28 | 85 | 7583 |
| Jangnadong | city | Jeju | Korea, Republic of (South) | 33.44 | 126.28 | 85 | 7941 |
| Jangseongdong | city | Jeju | Korea, Republic of (South) | 33.27 | 126.62 | 98 | 14189 |
| Jaripdong | city | Jeju | Korea, Republic of (South) | 33.39 | 126.23 | 52 | 8856 |
| Jeju | city | Jeju | Korea, Republic of (South) | 33.51 | 126.52 | 150 | 75378 |
| Jeju City | city | Jeju | Korea, Republic of (South) | 33.51 | 126.52 | 150 | 75378 |
| Jejusi | city | Jeju | Korea, Republic of (South) | 33.51 | 126.52 | 150 | 75378 |
| Jeondapdong | city | Jeju | Korea, Republic of (South) | 33.30 | 126.20 | 154 | 11523 |
| Jeondong | city | Jeju | Korea, Republic of (South) | 33.32 | 126.17 | 6 | 6942 |
| Jeondong | city | Jeju | Korea, Republic of (South) | 33.36 | 126.21 | 108 | 9354 |
| Jeongindong | city | Jeju | Korea, Republic of (South) | 33.32 | 126.25 | 321 | 14374 |
| Jeonjidong | city | Jeju | Korea, Republic of (South) | 33.27 | 126.19 | 72 | 7696 |
| Jindongsan | city | Jeju | Korea, Republic of (South) | 33.41 | 126.28 | 137 | 11540 |
| Jingeundong | city | Jeju | Korea, Republic of (South) | 33.40 | 126.26 | 193 | 10723 |
| Jinsuri | city | Jeju | Korea, Republic of (South) | 33.47 | 126.36 | 104 | 9356 |
| Jochimyeongdong | city | Jeju | Korea, Republic of (South) | 33.29 | 126.75 | 3 | 6671 |
| Jojungdong | city | Jeju | Korea, Republic of (South) | 33.46 | 126.42 | 830 | 43436 |
| Jonggusil | city | Jeju | Korea, Republic of (South) | 33.41 | 126.29 | 308 | 14733 |
| Jongjeongdong | city | Jeju | Korea, Republic of (South) | 33.28 | 126.69 | 3 | 7629 |
| Josan-ri | city | Jeju | Korea, Republic of (South) | 33.45 | 126.91 | 22 | 6498 |
| Joseongdong | city | Jeju | Korea, Republic of (South) | 33.35 | 126.28 | 830 | 16100 |
| Joyu-ri | city | Jeju | Korea, Republic of (South) | 33.39 | 126.80 | 380 | 11622 |
| Jozanho | city | Jeju | Korea, Republic of (South) | 33.45 | 126.91 | 22 | 6498 |
| Jozankei | city | Jeju | Korea, Republic of (South) | 33.45 | 126.91 | 22 | 6498 |
| Jozanri | city | Jeju | Korea, Republic of (South) | 33.45 | 126.91 | 22 | 6498 |
| Jujeondong | city | Jeju | Korea, Republic of (South) | 33.33 | 126.18 | 9 | 7692 |
| Jungangdong | city | Jeju | Korea, Republic of (South) | 33.31 | 126.72 | 226 | 10721 |
| Jungangdong | city | Jeju | Korea, Republic of (South) | 33.39 | 126.24 | 91 | 8764 |
| Jungburak | city | Jeju | Korea, Republic of (South) | 33.50 | 126.46 | 72 | 68157 |
| Jungdong | city | Jeju | Korea, Republic of (South) | 33.44 | 126.30 | 108 | 9841 |
| Jungdong | city | Jeju | Korea, Republic of (South) | 33.36 | 126.20 | 75 | 9354 |
| Jungdong | city | Jeju | Korea, Republic of (South) | 33.26 | 126.26 | 147 | 11134 |
| Jungdong | city | Jeju | Korea, Republic of (South) | 33.27 | 126.20 | 36 | 8554 |
| Jungdong | city | Jeju | Korea, Republic of (South) | 33.42 | 126.29 | 124 | 11419 |
| Jungdong | city | Jeju | Korea, Republic of (South) | 33.33 | 126.23 | 196 | 14833 |
| Jungdong | city | Jeju | Korea, Republic of (South) | 33.39 | 126.27 | 364 | 13188 |
| Jungdong | city | Jeju | Korea, Republic of (South) | 33.36 | 126.30 | 948 | 15790 |
| Jungdong | city | Jeju | Korea, Republic of (South) | 33.35 | 126.18 | 26 | 7826 |
| Jungdong | city | Jeju | Korea, Republic of (South) | 33.24 | 126.60 | 3 | 10688 |
| Jungdong | city | Jeju | Korea, Republic of (South) | 33.36 | 126.77 | 295 | 11600 |
| Jungdong | city | Jeju | Korea, Republic of (South) | 33.34 | 126.23 | 173 | 14494 |
| Jungeom | city | Jeju | Korea, Republic of (South) | 33.47 | 126.37 | 104 | 9861 |
| Junghadong | city | Jeju | Korea, Republic of (South) | 33.31 | 126.18 | 22 | 9435 |
| Junghadong | city | Jeju | Korea, Republic of (South) | 33.22 | 126.25 | 16 | 6167 |
| Junghadong | city | Jeju | Korea, Republic of (South) | 33.23 | 126.27 | 52 | 7346 |
| Junghadong | city | Jeju | Korea, Republic of (South) | 33.22 | 126.26 | 16 | 6338 |
| Junghwadong | city | Jeju | Korea, Republic of (South) | 33.42 | 126.31 | 308 | 14317 |
| Junghwadong | city | Jeju | Korea, Republic of (South) | 33.44 | 126.33 | 830 | 13049 |
| Jungsangdong | city | Jeju | Korea, Republic of (South) | 33.31 | 126.18 | 22 | 9435 |
| Jwagidong | city | Jeju | Korea, Republic of (South) | 33.27 | 126.23 | 121 | 10561 |
| Jōsan | city | Jeju | Korea, Republic of (South) | 33.45 | 126.91 | 22 | 6498 |
| Jōyū | city | Jeju | Korea, Republic of (South) | 33.39 | 126.80 | 380 | 11622 |